The sum of AB and ab is 180, and a is two-thirds of B. the ratio of AB to AB is (). The ratio of a to AB is () to find out how much a is, 180 times () equals ()

Two to three
Two to five
two-fifths
seventy-two

RELATED INFORMATIONS

1. If a / B is equal to 3 / 8, then the values of a and B are
2. 1. Given a + B = - 2, ab = 3, what is 2 [AB + (- 3a)] - 3 [2B AB] equal to? There are two more questions as follows: 1. It is known that the m-th power of - 3a, the second power of BC and the third power of 6a, the n-th power of B are of the same kind, and the value of the second power n - [the second power of 2mn-3 (- the second power of M, N + the second power of Mn)] of formula 3M is obtained
3. Given A-B = 5, ab = 4, then a ^ 3b-2a ^ 2B ^ 2 = AB ^ 3 equals
4. There is a ten digit number. Rounding it to 100 million is 4.8 billion. The maximum number is (), and the minimum number is ()
5. The approximate number of a five digit number rounded to 10000 is 40000. What is the maximum and minimum of this number
6. There is a six digit number. Rounding it to the "ten thousand" digit is 500000. The maximum number is______ The smallest is______ ．
7. There are two five digit numbers, one is more than 80000, and the other is less than 80000. Rounding to 10000, they are all about 80000, and the difference is 5. How many pairs of such five digit numbers are there I'm in a hurry
8. If a six digit number is rounded to an approximate value of 150000, then the maximum of the five digits is {and the minimum is {
9. If a six digit number is rounded to 10000, it will be about 400000. The largest number is 10000______ The smallest is______ ．
10. An eight digit number is composed of eight digits: 0, 1, 2, 3, 4, 5, 6 and 7. After rounding to ten million digits, it is about 70 million. What is the maximum and minimum of the eight digit number?
11. Let a be greater than 0, B be greater than 0, a + B = 1; prove that 1 of a + 1 of B + 1 of AB is greater than or equal to 8
12. Given a + B = 2, ab = - 3, then A-B equals () A. 20B. ±3C. 4D. ±4
13. If | a | = 3, | B | = 4, and | A-B | = A-B, then AB is equal to It's better to have a formula
14. (a + 3) * (B + 3) - AB = 54, then what is ab equal to
15. If. Ab × 7 =. A0b, then. Ab=______ ．
16. If (a + b) ^ 2 (a-b) = 7, the value of AB is equal to? If (a + b) ^ 2 = 11 (a-b) = 7, the value of AB is equal to?
17. How do three five and one one equal 24?
18. -How do 1,3, - 4,5 equal 24 Do not repeat a number
19. Because three fifths times five fifths equals one, so five fifths and three fifths are reciprocal
20. One out of two times four out of three times three out of two equals one, so one out of two times four out of three times three out of two is reciprocal, right?